From f7bada00a73e3117b46742ece279fc95bac7e81f Mon Sep 17 00:00:00 2001 From: Alexander Gavrilov Date: Sun, 19 Jun 2016 13:28:50 +0300 Subject: Cycles: add constant folding for more color operation nodes. Invert, brightness & constrast, separate/combine and Mix RGB blend modes and clamping. --- intern/cycles/kernel/svm/svm_color_util.h | 306 ++++++++++++++++++++++++++++++ 1 file changed, 306 insertions(+) create mode 100644 intern/cycles/kernel/svm/svm_color_util.h (limited to 'intern/cycles/kernel/svm/svm_color_util.h') diff --git a/intern/cycles/kernel/svm/svm_color_util.h b/intern/cycles/kernel/svm/svm_color_util.h new file mode 100644 index 00000000000..258cdeb630e --- /dev/null +++ b/intern/cycles/kernel/svm/svm_color_util.h @@ -0,0 +1,306 @@ +/* + * Copyright 2011-2013 Blender Foundation + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +CCL_NAMESPACE_BEGIN + +ccl_device float3 svm_mix_blend(float t, float3 col1, float3 col2) +{ + return interp(col1, col2, t); +} + +ccl_device float3 svm_mix_add(float t, float3 col1, float3 col2) +{ + return interp(col1, col1 + col2, t); +} + +ccl_device float3 svm_mix_mul(float t, float3 col1, float3 col2) +{ + return interp(col1, col1 * col2, t); +} + +ccl_device float3 svm_mix_screen(float t, float3 col1, float3 col2) +{ + float tm = 1.0f - t; + float3 one = make_float3(1.0f, 1.0f, 1.0f); + float3 tm3 = make_float3(tm, tm, tm); + + return one - (tm3 + t*(one - col2))*(one - col1); +} + +ccl_device float3 svm_mix_overlay(float t, float3 col1, float3 col2) +{ + float tm = 1.0f - t; + + float3 outcol = col1; + + if(outcol.x < 0.5f) + outcol.x *= tm + 2.0f*t*col2.x; + else + outcol.x = 1.0f - (tm + 2.0f*t*(1.0f - col2.x))*(1.0f - outcol.x); + + if(outcol.y < 0.5f) + outcol.y *= tm + 2.0f*t*col2.y; + else + outcol.y = 1.0f - (tm + 2.0f*t*(1.0f - col2.y))*(1.0f - outcol.y); + + if(outcol.z < 0.5f) + outcol.z *= tm + 2.0f*t*col2.z; + else + outcol.z = 1.0f - (tm + 2.0f*t*(1.0f - col2.z))*(1.0f - outcol.z); + + return outcol; +} + +ccl_device float3 svm_mix_sub(float t, float3 col1, float3 col2) +{ + return interp(col1, col1 - col2, t); +} + +ccl_device float3 svm_mix_div(float t, float3 col1, float3 col2) +{ + float tm = 1.0f - t; + + float3 outcol = col1; + + if(col2.x != 0.0f) outcol.x = tm*outcol.x + t*outcol.x/col2.x; + if(col2.y != 0.0f) outcol.y = tm*outcol.y + t*outcol.y/col2.y; + if(col2.z != 0.0f) outcol.z = tm*outcol.z + t*outcol.z/col2.z; + + return outcol; +} + +ccl_device float3 svm_mix_diff(float t, float3 col1, float3 col2) +{ + return interp(col1, fabs(col1 - col2), t); +} + +ccl_device float3 svm_mix_dark(float t, float3 col1, float3 col2) +{ + return min(col1, col2)*t + col1*(1.0f - t); +} + +ccl_device float3 svm_mix_light(float t, float3 col1, float3 col2) +{ + return max(col1, col2*t); +} + +ccl_device float3 svm_mix_dodge(float t, float3 col1, float3 col2) +{ + float3 outcol = col1; + + if(outcol.x != 0.0f) { + float tmp = 1.0f - t*col2.x; + if(tmp <= 0.0f) + outcol.x = 1.0f; + else if((tmp = outcol.x/tmp) > 1.0f) + outcol.x = 1.0f; + else + outcol.x = tmp; + } + if(outcol.y != 0.0f) { + float tmp = 1.0f - t*col2.y; + if(tmp <= 0.0f) + outcol.y = 1.0f; + else if((tmp = outcol.y/tmp) > 1.0f) + outcol.y = 1.0f; + else + outcol.y = tmp; + } + if(outcol.z != 0.0f) { + float tmp = 1.0f - t*col2.z; + if(tmp <= 0.0f) + outcol.z = 1.0f; + else if((tmp = outcol.z/tmp) > 1.0f) + outcol.z = 1.0f; + else + outcol.z = tmp; + } + + return outcol; +} + +ccl_device float3 svm_mix_burn(float t, float3 col1, float3 col2) +{ + float tmp, tm = 1.0f - t; + + float3 outcol = col1; + + tmp = tm + t*col2.x; + if(tmp <= 0.0f) + outcol.x = 0.0f; + else if((tmp = (1.0f - (1.0f - outcol.x)/tmp)) < 0.0f) + outcol.x = 0.0f; + else if(tmp > 1.0f) + outcol.x = 1.0f; + else + outcol.x = tmp; + + tmp = tm + t*col2.y; + if(tmp <= 0.0f) + outcol.y = 0.0f; + else if((tmp = (1.0f - (1.0f - outcol.y)/tmp)) < 0.0f) + outcol.y = 0.0f; + else if(tmp > 1.0f) + outcol.y = 1.0f; + else + outcol.y = tmp; + + tmp = tm + t*col2.z; + if(tmp <= 0.0f) + outcol.z = 0.0f; + else if((tmp = (1.0f - (1.0f - outcol.z)/tmp)) < 0.0f) + outcol.z = 0.0f; + else if(tmp > 1.0f) + outcol.z = 1.0f; + else + outcol.z = tmp; + + return outcol; +} + +ccl_device float3 svm_mix_hue(float t, float3 col1, float3 col2) +{ + float3 outcol = col1; + + float3 hsv2 = rgb_to_hsv(col2); + + if(hsv2.y != 0.0f) { + float3 hsv = rgb_to_hsv(outcol); + hsv.x = hsv2.x; + float3 tmp = hsv_to_rgb(hsv); + + outcol = interp(outcol, tmp, t); + } + + return outcol; +} + +ccl_device float3 svm_mix_sat(float t, float3 col1, float3 col2) +{ + float tm = 1.0f - t; + + float3 outcol = col1; + + float3 hsv = rgb_to_hsv(outcol); + + if(hsv.y != 0.0f) { + float3 hsv2 = rgb_to_hsv(col2); + + hsv.y = tm*hsv.y + t*hsv2.y; + outcol = hsv_to_rgb(hsv); + } + + return outcol; +} + +ccl_device float3 svm_mix_val(float t, float3 col1, float3 col2) +{ + float tm = 1.0f - t; + + float3 hsv = rgb_to_hsv(col1); + float3 hsv2 = rgb_to_hsv(col2); + + hsv.z = tm*hsv.z + t*hsv2.z; + + return hsv_to_rgb(hsv); +} + +ccl_device float3 svm_mix_color(float t, float3 col1, float3 col2) +{ + float3 outcol = col1; + float3 hsv2 = rgb_to_hsv(col2); + + if(hsv2.y != 0.0f) { + float3 hsv = rgb_to_hsv(outcol); + hsv.x = hsv2.x; + hsv.y = hsv2.y; + float3 tmp = hsv_to_rgb(hsv); + + outcol = interp(outcol, tmp, t); + } + + return outcol; +} + +ccl_device float3 svm_mix_soft(float t, float3 col1, float3 col2) +{ + float tm = 1.0f - t; + + float3 one = make_float3(1.0f, 1.0f, 1.0f); + float3 scr = one - (one - col2)*(one - col1); + + return tm*col1 + t*((one - col1)*col2*col1 + col1*scr); +} + +ccl_device float3 svm_mix_linear(float t, float3 col1, float3 col2) +{ + return col1 + t*(2.0f*col2 + make_float3(-1.0f, -1.0f, -1.0f)); +} + +ccl_device float3 svm_mix_clamp(float3 col) +{ + float3 outcol = col; + + outcol.x = saturate(col.x); + outcol.y = saturate(col.y); + outcol.z = saturate(col.z); + + return outcol; +} + +ccl_device_noinline float3 svm_mix(NodeMix type, float fac, float3 c1, float3 c2) +{ + float t = saturate(fac); + + switch(type) { + case NODE_MIX_BLEND: return svm_mix_blend(t, c1, c2); + case NODE_MIX_ADD: return svm_mix_add(t, c1, c2); + case NODE_MIX_MUL: return svm_mix_mul(t, c1, c2); + case NODE_MIX_SCREEN: return svm_mix_screen(t, c1, c2); + case NODE_MIX_OVERLAY: return svm_mix_overlay(t, c1, c2); + case NODE_MIX_SUB: return svm_mix_sub(t, c1, c2); + case NODE_MIX_DIV: return svm_mix_div(t, c1, c2); + case NODE_MIX_DIFF: return svm_mix_diff(t, c1, c2); + case NODE_MIX_DARK: return svm_mix_dark(t, c1, c2); + case NODE_MIX_LIGHT: return svm_mix_light(t, c1, c2); + case NODE_MIX_DODGE: return svm_mix_dodge(t, c1, c2); + case NODE_MIX_BURN: return svm_mix_burn(t, c1, c2); + case NODE_MIX_HUE: return svm_mix_hue(t, c1, c2); + case NODE_MIX_SAT: return svm_mix_sat(t, c1, c2); + case NODE_MIX_VAL: return svm_mix_val (t, c1, c2); + case NODE_MIX_COLOR: return svm_mix_color(t, c1, c2); + case NODE_MIX_SOFT: return svm_mix_soft(t, c1, c2); + case NODE_MIX_LINEAR: return svm_mix_linear(t, c1, c2); + case NODE_MIX_CLAMP: return svm_mix_clamp(c1); + } + + return make_float3(0.0f, 0.0f, 0.0f); +} + +ccl_device_inline float3 svm_brightness_contrast(float3 color, float brightness, float contrast) +{ + float a = 1.0f + contrast; + float b = brightness - contrast*0.5f; + + color.x = max(a*color.x + b, 0.0f); + color.y = max(a*color.y + b, 0.0f); + color.z = max(a*color.z + b, 0.0f); + + return color; +} + +CCL_NAMESPACE_END + -- cgit v1.2.3